EP 3627184 B1 20211215 - LASER RADAR DEVICE AND FREQUENCY MODULATION CONTROL METHOD
Title (en)
LASER RADAR DEVICE AND FREQUENCY MODULATION CONTROL METHOD
Title (de)
LASERRADARGERÄT UND FREQUENZMODULATIONSSTEUERVERFAHREN
Title (fr)
DISPOSITIF RADAR-LASER ET PROCÉDÉ DE COMMANDE DE MODULATION DE FRÉQUENCE
Publication
Application
Priority
JP 2017022684 W 20170620
Abstract (en)
[origin: EP3627184A1] The laser radar device (1) includes: a modulated light generator (10, 11) configured to generate modulated laser light using frequency modulation based on a control parameter; an optical combiner (15) configured to combine the received light and the local light to generate interference light; a photodetector (20) configured to detect the interference light and output an electrical signal; a frequency-to-voltage converter (31) configured to convert the electrical signal into a voltage signal; a characteristic calculator (32) configured to measure a characteristic value of the voltage signal; an evaluator (33) configured to evaluate, on a basis of the characteristic value, whether a center frequency of a spectrum of a return signal component is within a range of a demodulation band of a demodulation circuit (21); and a parameter setting unit (34) configured to change the control parameter when it is evaluated that the center frequency is not within the range of the demodulation band.
IPC 8 full level
G01S 17/34 (2020.01); G01S 7/4911 (2020.01); G01S 7/4915 (2020.01); G01S 17/32 (2020.01); G01S 17/58 (2006.01)
CPC (source: EP US)
G01S 7/481 (2013.01 - US); G01S 7/4911 (2013.01 - EP US); G01S 7/4915 (2013.01 - EP US); G01S 17/32 (2013.01 - EP); G01S 17/34 (2020.01 - EP US); G01S 17/58 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3627184 A1 20200325; EP 3627184 A4 20200422; EP 3627184 B1 20211215; JP 6430044 B1 20181128; JP WO2018235160 A1 20190627; US 11249190 B2 20220215; US 2021156999 A1 20210527; WO 2018235160 A1 20181227
DOCDB simple family (application)
EP 17914943 A 20170620; JP 2017022684 W 20170620; JP 2017565884 A 20170620; US 201716612269 A 20170620